Dow Styrofoam Cavitymate Ultra, 2.18"x16"x8'
1_0700255 MFG #: 77055
Styrofoam Cavitymate Ultra Insulation is an extruded polystyrene foam board that uses patented carbon black materials for enhanced thermal performance. It absorbs infrared radiation, slowing transmission through foam and lowing heat flow. It also has high moisture resistance and is durable.